CN201853157U - Program-controlled DC (direct current) load discharging circuit - Google Patents
Program-controlled DC (direct current) load discharging circuit Download PDFInfo
- Publication number
- CN201853157U CN201853157U CN2010206126284U CN201020612628U CN201853157U CN 201853157 U CN201853157 U CN 201853157U CN 2010206126284 U CN2010206126284 U CN 2010206126284U CN 201020612628 U CN201020612628 U CN 201020612628U CN 201853157 U CN201853157 U CN 201853157U
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- circuit
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- current
- operational amplifier
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Abstract
The utility model relates to a program-controlled DC (direct current) load discharging circuit which comprises a DC power supply and a load-adjustable circuit. The load-adjustable circuit is powered by the DC power supply and is formed through parallel connection of an adjustable constant-current branch and a program-controlled switch branch. The program-controlled switch branch is formed through parallel connection of a plurality of current branches which are formed through serial connection of electronic switches and resistors. The adjustable constant-current branch is connected with each electronic switch and a controller. The program-controlled DC load discharging circuit is more effective and reliable, can lessen the inductive and capacitive effects, can reduce load ripple waves and realizes program-controlling of loads and quick digital continuous current adjustment. The current adjustment can range from zero.
Description
Technical field
The utility model relates to a kind of discharge circuit of program control DC load, relates in particular to a kind of discharge circuit of the program control DC load in battery testing and precision voltage source field tests.
Background technology
In the widely used at home at present high-power power digital circuit, realize that the method for load conditioned circuit has a lot, have and use traditional rheochord to realize, but this circuit is difficult for realizing program control adjusting; Have and adopt grading resistance to switch, but the method can not realize the zero-based continuous adjustable discharge of electric current; Have and adopt semiconductor element to regulate as heater element, shortcoming is heavy poor reliability; The method that adopts power conversion is also arranged, but ripple very very much not is useful in battery testing and precision voltage source field tests.
Summary of the invention
To be solved in the utility model is the problems referred to above that prior art exists, aim to provide a kind of more effectively discharge circuit, its reliability, can reduce the ripple of inductance capacitance effect and load, realize the programme-controlled of load and realize that electric current starts from scratch continuously adjustable.
For addressing the above problem, the technical solution of the utility model is:
A kind of discharge circuit of program control DC load, comprise direct supply and load conditioned circuit, the load conditioned circuit is by DC power supply, described load conditioned circuit is formed in parallel by adjustable constant-flow branch road and programmed switch branch road, described programmed switch props up some current branch that are in series by electronic switch and resistance of route and is formed in parallel, and the adjustable constant-flow branch road links to each other with controller with each electronic switch.
Electronic switch of the present utility model is an electronic DC switch, can be IGBT and MOSFET, and they can realize the fictitious load conducting, play the effect of switch.
Preferably, described adjustable constant-flow props up route dynamic resistance circuit, operational amplifier and shunt and forms, the dynamic resistance circuit is made up of resistance, driver and dynamic resistance, it is in parallel after described resistance is connected with dynamic resistance with the programmed switch branch road, this parallel circuit links to each other with operational amplifier by shunt, operational amplifier links to each other with dynamic resistance by driver, and operational amplifier also links to each other with controller by digital to analog converter.
Preferably, described dynamic resistance is selected from MOSFET or IGBT or triode.
Preferably, be provided with the current regulating circuit between described shunt and the operational amplifier, the current regulating circuit links to each other with controller by analog to digital converter.
Preferably, described operational amplifier is parallel with a PID branch road.
Preferably, described programmed switch props up three current branch of route and is formed in parallel.
The discharge circuit of the program control DC load that the utility model provides is a kind of more efficiently, discharge circuit that reliability is higher, can reduce the ripple of inductance capacitance effect and load, realize the programme-controlled of load and realize digital fast continuous current adjusting, the Current Regulation scope can be started from scratch.
Description of drawings
Fig. 1 is a utility model circuit connection diagram.
Among the figure: the 1st, digital to analog converter, the 2nd, operational amplifier, the 3rd, analog to digital converter, the 4th, shunt, the 5th, controller, the 6th, driver, the 7th, current regulating circuit.
Embodiment
Further describe the utility model below in conjunction with drawings and Examples, but protection domain of the present utility model is not limited to this.
With reference to Fig. 1, the discharge circuit of program control DC load of the present utility model comprises direct supply and load conditioned circuit, and the load conditioned circuit is by DC power supply, and described load conditioned circuit is formed in parallel by adjustable constant-flow branch road and programmed switch branch road.
Described adjustable constant-flow props up route dynamic resistance circuit, operational amplifier 2 and shunt 4 and forms, the dynamic resistance circuit is made up of resistance R 1, driver 6 and MOSFET Q1, the series circuit of described resistance R 1 and MOSFET Q1 is in parallel with the programmed switch branch road, this parallel circuit links to each other with operational amplifier 2 by shunt 4, operational amplifier 2 links to each other with MOSFET Q1 by driver 6, operational amplifier 2 also links to each other with controller 5 by digital to analog converter 1, and operational amplifier 2 is parallel with the PID branch road.Described shunt 4 is provided with current regulating circuit 7 with the connecting place of operational amplifier 2, and current regulating circuit 7 links to each other with controller 5 by analog to digital converter 3.
Described programmed switch props up three current branch that are in series by electronic switch and resistance of route and is formed in parallel, comprise the R4 current branch that R3 current branch, electronic switch Q4 and resistance R 4 that the R2 current branch, electronic switch Q3 and the resistance R 3 that are in series by electronic switch Q2 and resistance R 2 are in series are in series, described electronic switch Q2, Q3 link to each other with controller 5 respectively with Q4.
The utility model carries out the data input of required steady current by controller 5, under the conversion of digital to analog converter 1, set the current value of adjustable constant-flow branch road, by the control of controller 5, the definite programmed switch branch road that need open, and electronic switch is carried out break-make control.After total current flows through shunt 4, be adjusted to suitable value by current regulating circuit 7 and be input in the operational amplifier 2, regulate MOSFET Q1 with this, such adjusting can be fed back the steady current of input and the difference of actual total current timely, regulate accurately, make electric current keep constant.Begin to transfer continuously from 0A by controlling the easy constant-current discharge of realizing, and can switch required constant current value fast.
Claims (6)
1. the discharge circuit of a program control DC load, comprise direct supply and load conditioned circuit, the load conditioned circuit is by DC power supply, it is characterized in that, described load conditioned circuit is formed in parallel by adjustable constant-flow branch road and programmed switch branch road, described programmed switch props up some current branch that are in series by electronic switch and resistance of route and is formed in parallel, and the adjustable constant-flow branch road links to each other with controller with each electronic switch.
2. the discharge circuit of program control DC load according to claim 1, it is characterized in that, described adjustable constant-flow props up route dynamic resistance circuit, operational amplifier and shunt and forms, the dynamic resistance circuit is made up of resistance, driver and dynamic resistance, it is in parallel after described resistance is connected with dynamic resistance with the programmed switch branch road, this parallel circuit links to each other with operational amplifier by shunt, operational amplifier links to each other with dynamic resistance by driver, and operational amplifier also links to each other with controller by digital to analog converter.
3. the discharge circuit of program control DC load according to claim 2 is characterized in that, described dynamic resistance is selected from MOSFET or IGBT or triode.
4. the discharge circuit of program control DC load according to claim 2 is characterized in that, is provided with the current regulating circuit between described shunt and the operational amplifier, and the current regulating circuit links to each other with controller by analog to digital converter.
5. the discharge circuit of program control DC load according to claim 2 is characterized in that, described operational amplifier is parallel with a PID branch road.
6. the discharge circuit of program control DC load according to claim 1 and 2 is characterized in that, described programmed switch props up three current branch of route and is formed in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206126284U CN201853157U (en) | 2010-11-18 | 2010-11-18 | Program-controlled DC (direct current) load discharging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206126284U CN201853157U (en) | 2010-11-18 | 2010-11-18 | Program-controlled DC (direct current) load discharging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201853157U true CN201853157U (en) | 2011-06-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206126284U Expired - Lifetime CN201853157U (en) | 2010-11-18 | 2010-11-18 | Program-controlled DC (direct current) load discharging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201853157U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123510A (en) * | 2013-01-05 | 2013-05-29 | 赖德龙 | Adjustable constant flow source circuit |
| CN108508387A (en) * | 2018-04-03 | 2018-09-07 | 系新电子技术（苏州）有限公司 | A kind of high-precision current load calibration method and calibration system |
| CN109870661A (en) * | 2019-02-25 | 2019-06-11 | 湖南福德电气有限公司 | High power continuous variable tunable load and its application method, computer readable storage medium |
| CN110247542A (en) * | 2019-04-25 | 2019-09-17 | 珠海格力电器股份有限公司 | For the discharge circuit of DC bus, driving plate and air conditioner |
-
2010
- 2010-11-18 CN CN2010206126284U patent/CN201853157U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123510A (en) * | 2013-01-05 | 2013-05-29 | 赖德龙 | Adjustable constant flow source circuit |
| CN108508387A (en) * | 2018-04-03 | 2018-09-07 | 系新电子技术（苏州）有限公司 | A kind of high-precision current load calibration method and calibration system |
| CN109870661A (en) * | 2019-02-25 | 2019-06-11 | 湖南福德电气有限公司 | High power continuous variable tunable load and its application method, computer readable storage medium |
| CN110247542A (en) * | 2019-04-25 | 2019-09-17 | 珠海格力电器股份有限公司 | For the discharge circuit of DC bus, driving plate and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HANGZHOU GAOTE NEW ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER NAME: HANGZHOU GAOTE DIGITAL TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 311305, Zhejiang City, Hangzhou province Ling'an Qingshan Lake Street landscape Avenue 86 Patentee after: Hangzhou Gaote New Energy Technology Co., Ltd. Address before: 311305, Zhejiang City, Hangzhou province Ling'an Qingshan Lake Street landscape Avenue 86 Patentee before: Hangzhou Gaote Digital Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110601 |